<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <style>
        .but {
            border-radius: 15px;
            border: 6px solid #cacaca;
            background-image: linear-gradient( #e1e1e1,#b0b0b0 );
            width: 180px;
            height: 60px;
            font-size: 15px;
            color:#434749;
            font-weight:bold
            c
            
        }
    </style>
</head>

<body>
    <button type="submit" class="but">
        CHECKOUT
    </button>
</body>

</html>